Because the airport is often congested, aircraft are frequently directed to circle over the capital, increasing the misery.

因为机场往往“机”满为患，飞机频繁地被告知必须在首都上空盘旋打转，这徒增噪音之大给人们带来的痛苦。

youdao

The vision was to take this huge tract of land and build a city, basically. between the downtown congested Bangkok and the airport.

那个愿景基本上就是在这一片巨大的土地上建造一座城市。

youdao

The country's roads and the capital's airport were so congested that the supply lines of goods into Haiti were clogged, leaving thousands of survivors to scrounge for food and emergency aid.

CNN: Survivors still being pulled from Haiti rubble

Medicins Sans Frontieres (Doctors Without Borders) said its cargo plane with 12 tonnes of medical supplies had been turned away from the congested Port-au-Prince airport three times since Sunday.

BBC: US sends extra troops for Haiti earthquake relief